function [cube] = get_radiance(ImageFolder,bands,a_Filename)
%get_reflectance 此处显示有关此函数的摘要
%   ImageFolder
%   bands
%   a_Filename
[imageFileNames,~,Wavelength] = getImageFileNames(ImageFolder);
[~,index,~] = intersect(Wavelength,bands);
load(a_Filename,'a');
for i = 1:length(index)
    J = imread(imageFileNames{index(i)});
    J = im2double(J)*a(index(i));
    cube(:,:,i) = J;
end

end

